Oct 15, 2016 · In current use, astronomy is concerned with “the study of objects and matter outside the earth's atmosphere,” while astrology is the purported divination of how stars and …

Astronomy is a natural science that studies celestial objects and the phenomena that occur in the cosmos. It uses mathematics, physics, and chemistry to explain their origin and their overall …

Sep 23, 2025 · Astronomy, science that encompasses the study of all extraterrestrial objects and phenomena. Since the late 19th century, astronomy has expanded to include astrophysics, the …

Astronomy is the study of everything in the universe beyond Earth’s atmosphere. That includes objects we can see with our naked eyes, like the Sun , the Moon , the planets, and the stars .

Astronomy deals with the position, size, motion, composition, energy, and evolution of celestial objects. Astronomers analyze not only visible light but also radio waves, x-rays, and other …

Astronomy is a physical science concerned with the smallest particles and the largest natural objects. The name Astronomy comes from the Greek roots Astr- and -nomia to literally mean …

Add to word list science the scientific study of the universe as a whole and of objects that exist naturally in space, such as the stars (Definition of astronomy from the Cambridge Academic …

Definition of astronomy noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

What is Astronomy? Astronomy and Astrophysics is the study of planets, stars, galaxies, and the Universe as a whole. This includes how all of these originate and their evolution in time.

May 15, 2025 · Astronomy is the study of everything beyond Earth's atmosphere. That includes the Moon, planets, stars, galaxies, black holes, and even the stuff we can't see - like dark matter.